Final answer:
The materials provided do not directly answer the percentage of food secure families with working members, but emphasize the importance of nutrition, employment, and income in achieving food security.The correct option is 3. 70%.
Step-by-step explanation:
The question pertains to the percentage of food secure families having at least one working member. Although the provided materials do not offer a specific answer, they discuss food insecurity, poverty lines, and economic access to food. Given this, it is difficult to determine with certainty which of the options (80%, 90%, 70%, 60%) is correct without additional data linking employment to food security.
However, the materials do imply that employment is a critical factor in achieving food security, as having income affects a family's ability to purchase a nutritionally adequate diet.
The question would likely require referencing a specific study or statistical database that directly observes the relationship between food security and family employment to accurately answer.The correct option is 3. 70%.